Rovibrational analysis of the ν2 and 2ν2 P-D stretching bands of PH2D

The infrared spectral regions of the P-D stretching fundamental and the first overtone band 2v(2) of PH2D were recorded with a resolution of 2.7 x 10(-3) and 6.8 x 10(-3) cm(-1), respectively. In the analysis about 710 and 440 transitions were assigned to the v(2) and 2v(2) bands. These provided 358 and 268 upper rovibrational energy terms. respectively, Resonance interactions between the states (010000) and (000200) were taken into account in the Hamiltonian used to fit upper energies of the (010000) state. The rovibrational energies of the (020000) state were fitted with a Hamiltonian for an isolated vibrational state, (C) 2003 Elsevier Science (USA). All rights reserved.